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Ticket T965833
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Should I use the ConnectionHelper.Connect method in multithread applications

created 4 years ago (modified 4 years ago)

[DevExpress Support Team: CLONED FROM T419520: How to troubleshoot the "Reentrancy or cross thread operation detected" error]

HelloDevExpress,
switch from

string connectionString = "Server=tcp:…,1433;Initial Catalog…";
dataLayer = XpoDefault.GetDataLayer(defaultConnectionString, AutoCreateOption.DatabaseAndSchema);

to TheadSafeDataLayer described here: https://docs.devexpress.com/XPO/DevExpress.Xpo.ThreadSafeDataLayer

What about the ConnectionHelper.cs files generated using XPO wizard.
They still have code like

public const string ConnectionString = @"Server=tcp:…,1433;Initial Catalog…";
public static void Connect(DevExpress.Xpo.DB.AutoCreateOption autoCreateOption, bool threadSafe = false)

Regards. Walter.

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Answers approved by DevExpress Support

created 4 years ago

Hello Walter,

Do you mean that the Connection Helper does not use the XpoDefault.GetConnectionPoolString method?
This method is not mandatory for a TheadSafeDataLayer. Use it if you want to use a restricted set of database connections in your application. Please refer to the following help topic for additional information: XpoDefault.GetConnectionPoolString(String, Int32, Int32) Method.
Please feel free to reactivate this ticket if I misunderstood your question.

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